Global Patent Index - EP 2540433 B1

EP 2540433 B1 20160817 - Method of refilling a mold for glas using powder laser buildup

Title (en)

Method of refilling a mold for glas using powder laser buildup

Title (de)

Auftragsschweißverfahren einer Glasform unter Verwendung von Pulver-Laser-Auftragschweissen

Title (fr)

Procédé de rechargement d'un moule de verrerie par rechargement laser de poudres

Publication

EP 2540433 B1 20160817 (FR)

Application

EP 12174603 A 20120702

Priority

FR 1155889 A 20110630

Abstract (en)

[origin: EP2540433A1] The process comprises machining an edge of a mold (1) so as to form a planar surface that has flat or chamfered shape, depositing a determined quantity of a resurfacing material (11) on the planar surface of the edge, and simultaneously welding the recharging material on the planar surface using a laser beam (21) so as to form a reinforcing zone (111). The resurfacing material: comprises a metal or metal alloy; is present in the form of powder; is projected by a nozzle (3) on the mold; and is projected on the planar surface and downstream of a focusing zone of the laser beam. The process comprises machining an edge of a mold (1) so as to form a planar surface that has flat or chamfered shape, depositing a determined quantity of a resurfacing material (11) on the planar surface of the edge, and simultaneously welding the recharging material on the planar surface using a laser beam (21) so as to form a reinforcing zone (111). The resurfacing material: comprises a metal or metal alloy; is present in the form of powder; is projected by a nozzle (3) on the mold; and is projected on the planar surface and downstream of a focusing zone of the laser beam. The depositing and welding steps are performed without preheating the mold. The surface of the mold to be recharged is disposed downstream of the focusing zone of the laser beam. The focusing zone is disposed at a distance of 10 mm from the planar surface. The method further comprises passing the laser beam on the planar surface of the mold to be recharged according to a controlled slew rate of 600-2000 mm/minutes, and machining the reinforcing zone. An independent claim is included for a glassware mold made of cast iron, bronze or steel.

IPC 8 full level

B23K 26/34 (2014.01); B23P 6/00 (2006.01); B23P 15/24 (2006.01); B29C 33/56 (2006.01); C03B 9/48 (2006.01); C03B 11/08 (2006.01); C03B 40/00 (2006.01); C23C 4/08 (2006.01)

CPC (source: EP US)

B23K 26/32 (2013.01 - EP US); B23K 26/34 (2013.01 - EP US); B23K 26/342 (2015.10 - EP US); B23P 6/00 (2013.01 - EP US); C23C 24/106 (2013.01 - EP US); B23K 2101/20 (2018.07 - EP US); B23K 2101/35 (2018.07 - EP US); B23K 2103/04 (2018.07 - EP US); B23K 2103/05 (2018.07 - EP US); B23K 2103/06 (2018.07 - EP US); B23K 2103/12 (2018.07 - EP US); B23K 2103/18 (2018.07 - EP US); B23K 2103/26 (2018.07 - EP US); B23K 2103/50 (2018.07 - EP US); B23K 2103/52 (2018.07 - EP US)

Citation (examination)

EP 0221752 A2 19870513 - TOYOTA MOTOR CO LTD [JP]

Citation (opposition)

Opponent : Siemens Aktirngesellschaft

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2540433 A1 20130102; EP 2540433 B1 20160817; ES 2602031 T3 20170217; FR 2977177 A1 20130104; FR 2977177 B1 20140404; FR 3001166 A1 20140725; FR 3001166 B1 20150605; HR P20161491 T1 20161216; HU E031835 T2 20170828; PT 2540433 T 20161122; US 2014001161 A1 20140102; US 9889525 B2 20180213

DOCDB simple family (application)

EP 12174603 A 20120702; ES 12174603 T 20120702; FR 1155889 A 20110630; FR 1451338 A 20140219; HR P20161491 T 20161111; HU E12174603 A 20120702; PT 12174603 T 20120702; US 201313927206 A 20130626